#! /usr/bin/python3
# author ckm
import time


def sing():
    for i in range(3):
        print('正在唱歌--- %d' % i)
        time.sleep(1)



def dance():
    for i in range(3):
        print('正在跳舞--- %d' % i)
        time.sleep(1)


if __name__ == '__main__':
    sing()
    dance()
